Insta call this allin?

[ahnuld]

400nl 6max on party. I was sick and playing too agressivly for anyones sake, getting paid off whenever I had an overpair and the like. But im also paying off a bit too much, not playing my A game. Opponent is ok, a bit fishy, standard crappy party player. He either makes a real raise like to 15 or he min raises to 8. Both times he min raised and showed the hand down it was a weak ace, like A8 offsuit. One of his normal raises got shown down and it was AQ. Because of this, iv been coming overthetop of his min raises to steal the calls, its worked twice before.

So villan UTG (450, I cover) makes it 8, call, fold,I come overthetop from the BB making it 40. Villan calls, limper folds.

Flop comes 555 suited (do I have to say no flush draws?)
I lead for 50 into the 85 pot. Villan goes allin, its about 360 more to call.